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Staff Researches

Automatic Adaptation of Tire Pressure According to Operating Conditions

  • Author Name :
    Yehia Hossam El Din
  • CoAuthors :
    A. Hendy; Shawky Hegazy; M.A.A. Emam
  • Source :
    International Journal of Vehicle Structures and Systems
  • Research Date :
  • Abstract :
    The off-road vehicles have much higher rolling resistance due to tire sinkage. This paper presents a proposed system for automatic adaptation for tire inflation/deflation, according to operating conditions. The tire inflation pressure is manually changed by the driver to some prefixed pressure values. The proposed control system is based on calculating the instantaneous wheel slip ratio. As the slip ratio increases, the tire pressure decreases automatically to increase the contact area and to decrease the dynamic sinkage and vice versa. An algorithm for the control strategy is developed. The proposed system provides a continuous monitoring of tire pressures inside the tire and then to inflate/deflate according to terrain types. The results show that a low inflation pressure has a considerable effect on the net traction ratio where it improves the performance by 20% and the buffed tire has a better traction than lugged tire on sand.
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